APA (7th ed.) Citation

Lehner, E. (1956). The picture book of symbols / by E. Lehner. Penn Publishing.

Chicago Style (17th ed.) Citation

Lehner, E. The Picture Book of Symbols / by E. Lehner. Penn Publishing, 1956.

MLA (9th ed.) Citation

Lehner, E. The Picture Book of Symbols / by E. Lehner. Penn Publishing, 1956.

Warning: These citations may not always be 100% accurate.